cal to BTU
Convert Calorie to British Thermal Unit
Convert Calorie to British Thermal Unit instantly with the tool above. The conversion factor is 0.00396567, meaning 1 calorie equals 0.00396567 British thermal units. Type any value and the result updates immediately — no ads, no page reloads, no clutter.
Type a number above. The result updates instantly — no buttons, no reloads.
1 Calorie = 0.00396567 British thermal units
1 British Thermal Unit = 252.16440072 calories
Quick reference
Common calories converted to British thermal units at a glance.
| cal | BTU |
|---|---|
| 1 | 0.00396567 |
| 2 | 0.00793133 |
| 5 | 0.01982833 |
| 10 | 0.03965667 |
| 25 | 0.09914167 |
| 50 | 0.19828334 |
| 100 | 0.39656668 |
| 500 | 1.98283342 |
| 1,000 | 3.96566683 |
How to convert calories to British thermal units
To convert a value from calories to British thermal units, multiply the calorie value by 0.00396567 British thermal units. For example, 10 calories × that factor = 0.03965667 British thermal units.
This calorie to british thermal unit converter runs entirely in your browser, so results appear instantly with no page reload, no advertisements and no sign-up.
Frequently asked questions
How many British thermal units are in 1 calorie?+
1 calorie is equal to 0.00396567 British thermal units.
How do you convert calories to British thermal units?+
To convert calories to British thermal units, multiply the calorie value by 0.00396567. For example, 10 calories × 0.00396567 = 0.03965667 British thermal units.
What is the formula to convert calories to British thermal units?+
Calorie → British Thermal Unit: value × 0.00396567. Equivalently, 1 calorie = 0.00396567 British thermal units.
Is this Calorie to British Thermal Unit converter free to use?+
Yes. This calorie to british thermal unit converter is completely free, works instantly in your browser, and contains no advertisements, popups or sign-up.
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